Qantas Delays/Cancellations

[milehighclub]

OQB spent the night in Dubai. It's leaving 1015 today.

 

[jb747]

Go back to FR and look at OQB's arrival flight into DXB.

 

[Quickstatus]

JB747 what was the sightseeing like around the racetrack?

 

[jb747]

JB747 what was the sightseeing like around the racetrack?

I didn't do any runs around the racetrack...unless you mean the horse track I can see from my window.

 

[Quickstatus]

Go back to FR and look at OQB's arrival flight into DXB.

This racetrack?

 

[jb747]

Generally I think that people try to glean far too much information from FR24, but there can be some interesting stuff if you look closely enough. I'm not going to tell you the answer...a project for you.

 

[JessicaTam]

Generally I think that people try to glean far too much information from FR24, but there can be some interesting stuff if you look closely enough. I'm not going to tell you the answer...a project for you.

A problem with the aircraft setting it up for landing? Which then caused its departure to be subsequently delayed and then cancelled?

 

[Quickstatus]

A problem with the aircraft setting it up for landing? Which then caused its departure to be subsequently delayed and then cancelled?

OQB cancellation was apparently due to an airconditioning problem.

But JT, you are referring to OQB's altitude of 5000 feet while on approach for far too long resulting in another loop on the "racetrack"?

 

[jb747]

OQB cancellation was apparently due to an airconditioning problem.

Whilst true, that's why it pushed back and then returned to the blocks, and does not relate to the FR image posted above.

 

[Melburnian1]

The Monday 23 May 2016 A388 operating QF12 departed LAX 17 minutes late at 2247 but its Wednesday 25 May arrival is not expected until 0705, 35 minutes behind the 'table.

B744-operated QF16 from LAX pushed back 24 minutes tardy at 2344 and should arrive on Wednesday morning in often sunny BNE at 0655, 45 minutes late. With both scheduled turnarounds allowing more time than what can be achieved with each aircraft type, outbound flights back to LAX ought not be late - touch wood.

 

[Quickstatus]

Whilst true, that's why it pushed back and then returned to the blocks, and does not relate to the FR image posted above.

It remained at 5000 feet and did another loop of the racetrack. Holding pattern? Or did a passenger take too long to get back into his/her seat?

 

[defurax]

Whilst true, that's why it pushed back and then returned to the blocks, and does not relate to the FR image posted above.

In the image above it looks like the aircraft was initially aligning with Sharja airport. Is this a common vector on approach to DXB? (with the usual caveat that I have no idea what I'm talking about! )

 

[jb747]

The STAR takes you right over Sharjah. Compare it to OQA arriving this morning. The information is there, you aren't seeing it.

 

[Quickstatus]

In the image above it looks like the aircraft was initially aligning with Sharja airport. Is this a common vector on approach to DXB? (with the usual caveat that I have no idea what I'm talking about! )

Yes it is, this is QF1 on approach from 30 Mar

 

[Quickstatus]

The STAR takes you right over Sharjah. Compare it to OQA arriving this morning. The information is there, you aren't seeing it.

The STAR has a shorter "S" than that described by OQB.

 

[jb747]

They are pretty pictures, but the answer is not to be found looking at them. A bit of tunnel vision here....

 

[torks]

OQB appears to have been on track to landing and then gone around for one reason or another.

But i think what you are after is that OQB has been turned around to form QF 2 back to Sydney. I think usually the same plane will do the entire flight from Melbourne to London. I'm guessing that something has broken and they need to get it back to Sydney for maintenance?

 

[Quickstatus]

They are pretty pictures, but the answer is not to be found looking at them. A bit of tunnel vision here....

OQB came in faster than usual. About 30 kts faster than the usual A380 approach speed.

OQB appears to have been on track to landing and then gone around for one reason or another.

But i think what you are after is that OQB has been turned around to form QF 2 back to Sydney. I think usually the same plane will do the entire flight from Melbourne to London. I'm guessing that something has broken and they need to get it back to Sydney for maintenance?

Airlines such as this one will not takeoff on 14 hour flight to return to base to fix "something". That "something" is fixed or it does not take off unless MEL (minimum equipment list) permits.

 

[jb747]

Hooray. Now I can go to bed and get some sleep.

Your homework is to work out the why, and perhaps the what then?

 

[Quickstatus]

Hooray. Now I can go to bed and get some sleep.

Your homework is to work out the why, and perhaps the what then?

170 kt landing speed - sounds high . About 30 kt above usual landing speed ( and faster than QF32 emergency landing speed)

FR24 I think uses ground speed which at close to ground level will be the IAS corrected for tail or head winds.

So could the 30 kts be a tailwind?. Can an A380 or any other aircraft land (or allowed to land) with such a tailwind?. Maybe the TW at the runway is a lot less?. I have not looked at the other arrivals around the same time - this would give some indication as to whether other flights has similar landing speeds.

I dont think the "extra" speed would be for a heavy aircraft as OQB just burned 14 hrs of jet fuel.

Or a slats/flaps issue requiring a higher approach and landing speed.
JessicaTam may have been on the right track and a slats/flaps issue might explain the racetracking over DXB at 5000feet before landing which added another 15 min - maybe the pilots needed this to achieve a stabilised approach?

Can only mean more runway length is needed. DXB runway lengths are about 500m shorter than SYD or SIN.

QF32 would not have been able to emergency land in DXB as it used 4000m in SIN.:shock: Though it would have the 4500m at DWC